Some Toronto residents are demanding a one-year moratorium on two proposed data centre projects, as a neighbouring city has voted to block any such new developments for a year. Councillors in Mississauga, Ont., voted Wednesday in favour of a data centre moratorium while the city studies their impact and how they would be regulated. Another protester, Diane Holmlund, said she wasn’t familiar with how data centres operate until development began in her Scarborough neighbourhood. Now, Holmlund said she has grown increasingly concerned about the energy implications of a data centre expansion. Erin Mackey, a downtown Toronto resident, said she is concerned about whether large data centres could increase utility costs for residents.